﻿#region Copyright and Licensing Notice
// Copyright (C) 2011 Steven Bosnick
// 
// This program is open source software; you can redistribute it 
// and/or modifiy it under the terms of the Eclipse Public License,
// version 1.0.
// 
// This program is distributed in the hope that it will be useful, 
// but WITHOUT ANY WARRANTY; without even the implied
// warranty of MERCHANTABILITY or FITNESS FOR A 
// PARTICULAR PURPOSE. See the Eclipse Public License for more
// details.
// 
// You should have received a copy of the Eclipse Public License 
// along with this program; if not, you can find a copy at
// "http://www.opensource.org/licenses/eclipse-1.0.php".
#endregion
using System;
using BitwiseOre.Properties;
using BitwiseOre.SharedMemory.Core;
using BitwiseOre.SharedMemory.JetBrains;

namespace BitwiseOre.SharedMemory.Context
{
    [UsedImplicitly]
    internal sealed class ListenerContext : IListenerContext
    {
        private static readonly string MaxPendingConnectionsTooSmallMessage =
            Resources.ListenerContext_MaxPendingConnectionsTooSmallMessage;
        private static readonly string MaxPendingConnectionsTooLargeMessage = 
            Resources.ListenerContext_MaxPendingConnectionsTooLargeMessage;

        private const int DefaultMaxPendingConnection = 32;
        private readonly Lazy<int> _upperBoundPendingConnetions;

        private int _maxPendingConnections;

        public ListenerContext(IGuidQueueSizer sizer)
        {
            _maxPendingConnections = DefaultMaxPendingConnection;
            _upperBoundPendingConnetions = new Lazy<int>(sizer.GetCurrentMaximumCount);
        }

        public int MaxPendingConnections
        {
            get { return _maxPendingConnections; }
            set
            {
                if (value <= 0)
                    throw new ArgumentOutOfRangeException("MaxPendingConnections", value,
                                                          MaxPendingConnectionsTooSmallMessage);
                if (value > _upperBoundPendingConnetions.Value)
                    throw new ArgumentOutOfRangeException("MaxPendingConnections", value,
                                                          MaxPendingConnectionsTooLargeMessage);
                _maxPendingConnections = value;
            }
        }
    }
}